Model · Co-rotating twin screw KTE
KTE-85B Twin Screw Extruder
KTE-85B: 85 mm bore, 220–315 kW, 2×2,100 N·m, 550–1,000 kg/h — the large-bore B-class machine where volume, not severity, is the project. A reference KTE-85B twin screw extruder page from Kerke.
KTE-85B twin screw extruder — workshop photo 1, Kerke workshop, Nanjing
Co-rotating twin screw KTE — workshop photo 2, Kerke workshop, Nanjing
Co-rotating twin screw KTE — workshop photo 3, Kerke workshop, Nanjing
Co-rotating twin screw KTE — workshop photo 4, Kerke workshop, Nanjing
Co-rotating twin screw KTE — workshop photo 5, Kerke workshop, Nanjing
Co-rotating twin screw KTE — workshop photo 6, Kerke workshop, NanjingQuick answer
The KTE-85B is the first of the large-bore class: 85 mm screw, B-class torque 2×2,100 N·m, 550–1,000 kg/h. It is the volume answer for filler and colour masterbatch plants that have outgrown the 75 family without needing D-class severity.
Workshop photos and a running video — shot on our own lines, not stock images.
Parameters
| Model | Dia. (mm) | Speed (rpm) | Motor (kW) | Torque (N·m) | Output (kg/h) |
|---|---|---|---|---|---|
| KTE-85B | 85 | 500–600 | 220–315 | 2×2100 | 550–1000 |
Reference output measured on the stated material family; subject to a material trial. Motor and torque values are per machine, not per screw shaft.
Where it fits in the range
Between the KTE-75B (300–800 kg/h, same torque class) and the KTE-95B (2×3,000 N·m, 800–1,500 kg/h). If the duty is severe — glass fibre, 90% filler — the 75D carries more torque per kg of machine; if the duty is volume, the 85B carries more volume per euro.
What it runs
Duties: filler masterbatch at 70–85% in the 600–900 kg/h band, colour masterbatch in bulk, polyolefin compounding and recompounding at commercial scale, and carrier resins where free volume converts directly into tonnes.
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Configuration options
Every KTE ships as a building-block system: screw elements on splined shafts, barrel modules that accept side feeders, liquid injection and vacuum vents, so the geometry is set by the formulation rather than fixed at the factory. Three choices define a KTE-85B quotation: the L/D (32–36 for simple filling, 40–48 with side feed and devolatilization, 52–60 for reactive duties), the wear package (standard 38CrMoAlA or bimetallic liner with PM/HIP elements where CaCO3, talc or glass fibre grind), and the pelletizing head (strand, water ring, air-cooled hot face or underwater — matched to the polymer, not to the model number).
FAQ
When does an 85B beat a 75D?
On benign, volume-driven recipes: same torque (2×2,100 N·m), bigger bore, so kg/h per euro is better. The 75D wins when the formulation itself is the problem — glass, 90% filler, reactive chemistry.
What auxiliaries does an 85B-class line need?
Gravimetric feeding sized for 1,000 kg/h, a pelletizer rated for the full band (water ring or strand), and downstream cooling that matches — the extruder is rarely the bottleneck at this size; the pelletizing line is.
Is the 85B a common export model?
It is the standard step for plants scaling past 500 kg/h. We deliver it most often with water-ring pelletizing on filler masterbatch and strand on colour masterbatch.
Where these numbers come from
Parameters come from the Kerke parameter table and product master data sheet, cross-checked against commissioning records for the same model and duty. Where a catalogue value and a trial value disagree, the trial value is the one we quote.
Reviewed by the Kerke process team, Nanjing. Page updated 6 November 2026.
Send 25–50 kg — we return pellets, a video and a report with the parameters we used, in 3–7 days.
KTE-85B twin screw extruder — the short version
Note on KTE-85B twin screw extruder: what separates one machine from another is torque class, L/D and the wear package matched to your material, not the build standard. Shortlist from the tables, then confirm the choice on a trial with your own powder.
Planning an upgrade this quarter? Send the material and the target output — the configuration comes back within one working day.
Every quotation lists the wear package as a separate line, so its cost is visible from day one.
Questions are answered the same day, in English or Chinese.
Note on KTE-85B twin screw extruder: the data on this page was last verified on our own test line in Nanjing.
Not sure which KTE-85B twin screw extruder configuration fits? Describe the material and the pellet shape required — we answer with a recommendation, not a brochure.
A KTE-85B twin screw extruder from Kerke ships with CE documentation, a test-run record and a recommended spare set.
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